Improvement in manufacturing cylinders for cotton-gins and machine-cards



` ing in the metal.

` l UNITED STATES .PATENT ,Orricng JNO. L. TUTTLE, OF NEV YORK, N. Y.

IMPROVEMENT IN MANUFACTURING CYLINDERS FOR COTTON-GNS AND MACHlNECARDS.

. Specification forming part of Letters Patent No. l 5.904. dated October 14,1856.

To all whom it may concern,

Be it known that I, JOHN L. TUTTLE, of the city, county, and State of New York, have invented certain new and useful Improvements Fig. 2 represents a horizontal section through` the several parts of which the cylinder is composed when ready or prepared for the pouring of the metal which unites them.

To enable others skilled `in the art to make and use my invention, I will proceed to de` scribe the same by reference to the drawings.

In the rst placeI prepare a cast-iron block or former of the proper diameter, with jaws or clamps connected to it, so thata piece of sheet-iron of the right length may be bent or clamped around it tightly. This forms the sheet into the cylinder a, and while thus held the lapped ends are punched, so as to be afterward riveted, either whileon or after it is taken off from the block or former, as seen at b, Fig. 1. The block or former may also `be provided with rounded grooves or recesses, into which the sheet is pressed to form the gutters c c c. After the inner cylinder is thus prepared, as shown in Fig. l, another plain cylinder, d, is formed around it, and fitting as snugly to it as can be conveniently done, by either the same block or former and clamp, or by other similar means, and holes e are punched through the outer cylinder, d, into the gutters c, formed in the inner cylinder. `These two cylinders a d being placed the latter outside of the former, (after they are removed from the block,) rings f, iirstturned true, are placed within the inner cylinder, at suitable distances apart, to keep the cylinder from warping or twisting during the after operation of pour- The bed or basis ofthe toothed cylinder being thus prepared, a paper cylinder, g, containing the teeth 71., is slipped over the outer cylinder, leaving aspace, z', between the outer cylinder, d, and the paper cylinder g, into which the teeth h project.

The manner of setting the teeth in the paper cylinder is fully set forth in my patent of October 30, 1849, and need not here be elaborately described.

The several parts above set forth being properly arranged, they are then ready to be soldered or cemented together by hot metal poured in, as will be now described, trst remarking that any kind of heat may be applied to the interior of the cylinders to warm or heat the metal, so that the solder or fluid metal poured in shall low freely all around.` The iiuid metal is poured in at4 the tops ofthe gutters c c c, in any of the well-known convenient ways of accomplishing this object, to make lthe operation as expeditious as possible, and avoid the bad consequence incident to too much haste. The metal thus poured in at c runs down the gutters,and through the holes c into the space ,-completely filling up said space. and, uniting the ends of the teeth with itself and the cylinders, forms one rigid mass.

4as a head to force it through e and around the roots of the teeth, but it protects the soldering process from the atmospheric air, and no oxide can form which would clog the iiow of the metal. I thus make a perfectly-formed junction between the teeth and the cylinder, and should the two cylinders a d not fit to each other exactly, the solder iinds its'way between them, and thus closes up every crack, oriiice,

or opening, bringing thewhole into one firmlyi united mass by a certain and expeditious process.` After the cylinder is cooled the paper is soaked off, as described in my former patent, and .by introducing a wooden or other head into each ofthe ends of the cylinder for holding the journals or shaft upon which it is to turn, it is ready for use. During the whole process of heating, pouring, and cooling, the rings f keep the cylinders in true circular form, and prevent any undue twisting or warping of the metal.

Q y. l 115,961@

Having thus fully set forth the elim-noter of the openings e into tbe space i, which unites my invention and shown how it may be rethe Whole into one rigid mass, and avoids duced to practice, kwhat I claim therein, und the danger of irregular flowing of the melted desire to secure by Letters Patent, ismetal-11s set forth.

The manner herein described of making` eyll inders for cotton-gills or for veerding` or elezuiing` engines-viz.7 by introducing the fluid lVituesses:

metal which is to unite the teeth to the eyl- A. B. SToUGI-rro-N,

inder between theeylinders a d, and through l E. COHEN.

J. L. TUTTLE. 

